O'Connor famously tore up a photo of then-Pope John Paul II to end her 1992 Saturday Night Live performance.
"I can't believe what I'm watching," the British singer wrote.
NBC's celebration of its long-running sketch show brought back iconic musical guests and past cast members for an unforgettable night.
Live from New York, it's the talent behind the curtain.
Celebrate 50 seasons of Saturday Night Live with new TV specials.
We count down our favorites, from Adam Sandler's 'Opera Man" to Eddie Murphy's "Celebrity Hot Tub Party" in run-up to the Feb. 16 all-star primetime special on NBC.
Featuring memorable show introductions from Taylor Swift, Ariana Grande and more.
'SNL 50: The Homecoming Concert' will take place on Feb. 14 at Radio City Music Hall in New York City.
Post Malone, Jelly Roll and more will also take the stage.
Despite infamous performances from the likes of Elvis Costello, Sinéad O'Connor, and more, 'SNL' has apparently never officially barred any musical guests from returning.
